Better documentation on Sets and Maps, and more.

sdk/lib/core/num.dart

Index: sdk/lib/core/num.dart
diff --git a/sdk/lib/core/num.dart b/sdk/lib/core/num.dart
index eb8f82ce4779381c28a5a63de5b411b4081b9333..facfc95b353c56db6767ef7c0955fe9e99c162ff 100644
--- a/sdk/lib/core/num.dart
+++ b/sdk/lib/core/num.dart
@@ -165,8 +165,8 @@ abstract class num implements Comparable<num> {
   double toDouble();
 
   /**
-   * Converts [this] to a string representation with [fractionDigits] digits
-   * after the decimal point.
+   * Converts [this] as a [double] to a string representation with
+   * [fractionDigits] digits after the decimal point.
    *
    * The parameter [fractionDigits] must be an integer satisfying:
    * [:0 <= fractionDigits <= 20:].
@@ -174,8 +174,8 @@ abstract class num implements Comparable<num> {
   String toStringAsFixed(int fractionDigits);
 
   /**
-   * Converts [this] to a string in decimal exponential notation with
-   * [fractionDigits] digits after the decimal point.
+   * Converts [this] as a [double] to a string in decimal exponential notation
+   * with [fractionDigits] digits after the decimal point.
    *
    * If [fractionDigits] is given then it must be an integer satisfying:
    * [:0 <= fractionDigits <= 20:]. Without the parameter the returned string
@@ -184,13 +184,11 @@ abstract class num implements Comparable<num> {
   String toStringAsExponential([int fractionDigits]);
 
   /**
-   * Converts [this] to a string representation with [precision] significant
-   * digits.
+   * Converts [this] as a double to a string representation with [precision]
+   * significant digits.
    *
    * The parameter [precision] must be an integer satisfying:
    * [:1 <= precision <= 21:].
    */
   String toStringAsPrecision(int precision);
-
-
 }